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Full text of "The Morphology And Evolution Of The Apes And Man"

194
MORPHOLOGY AND EVOLUTION
externus. Some authors have stated that this muscle corresponds to the tensor fasciae femoris, but both muscles are present in many examples of these Apes.
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Fis. 36.—The muscles of the leg and the knee-joint in the Chimpanzee. A, origin of the muscles from the pelvis; B, muscles of the hallux; C, the adductor brevis and obturator nerve ; D and E, situation of bursse; F} the knee-joint. A.D. and £.D., anterior and posterior divisions of the obturator nerve; A.C.L. and P.C.L., anterior and posterior cruciate ligaments: ADD. BEEV., ADD. LONG., and ADD. MAG., adductores brevis, longus and magnus ; C.T., connecting fibrous strip; E.L.H., extensor longus hallucis; E.S.C. and i.s.c., external and internal semilunar cartilages; GEH., gemelli; GLUT. MED., gluteus medius; GBA., gracilis; I.C.B., entocuneiform ; MET.I, first metatarsal; 2f.B., scaphoid ; OBT. EXT. and OBT. 12TT., obturatores externus and internus; PECT., pectineus; PYB., pyriformis; T.A., tibialis anticus; Bur., bursse. Note the ligamentous pulley for the tendon of the extensor longus hallucis in fig. B.